The Boeing P-8 Poseidon has become the go-to maritime patrol and reconnaissance aircraft and is able to carry out many tasks for the US Navy (and allies). It was built to replace the aging P-3C Orion fleet (which was developed in the 1960s). Not only is the P-8 Poseidon used for maritime reconnaissance, but it is also a fighting machine carrying a range of anti-ship and anti-submarine weapons onboard. The Poseidon is a valuable maritime patrol aircraft and is one of the first lines of defense against enemy submarines.